1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
#
# Unusual variables checked by this code:
# NOP - two byte opcode for no-op (defaults to 0)
# DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
# OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
# (e.g., .PARISC.milli)
# OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
# (e.g., .PARISC.global)
# OTHER_SECTIONS - at the end
# EXECUTABLE_SYMBOLS - symbols that must be defined for an
# executable (e.g., _DYNAMIC_LINK)
# TEXT_START_SYMBOLS - symbols that appear at the start of the
# .text section.
# DATA_START_SYMBOLS - symbols that appear at the start of the
# .data section.
# OTHER_BSS_SYMBOLS - symbols that appear at the start of the
# .bss section besides __bss_start.
#
# When adding sections, do note that the names of some sections are used
# when specifying the start address of the next.
#
test -z "$ENTRY" && ENTRY=_start
test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
test "$LD_FLAG" = "N" && DATA_ADDR=.
SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2) }"
SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2) }"
INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
PLT=".plt ${RELOCATING-0} : { *(.plt) }"
cat <<EOF
OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
"${LITTLE_OUTPUT_FORMAT}")
OUTPUT_ARCH(${ARCH})
ENTRY(${ENTRY})
${RELOCATING+${LIB_SEARCH_DIRS}}
${RELOCATING+/* Do we need any of these for elf?
__DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */}
${RELOCATING+${EXECUTABLE_SYMBOLS}}
${RELOCATING- /* For some reason, the Solaris linker makes bad executables
if gld -r is used and the intermediate file has sections starting
at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld
bug. But for now assigning the zero vmas works. */}
${RELOCATING+PROVIDE (__stack = 0);}
SECTIONS
{
/* Read-only sections, merged into text segment: */
${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}}
${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}}
${CREATE_SHLIB-${INTERP}}
.hash ${RELOCATING-0} : { *(.hash) }
.dynsym ${RELOCATING-0} : { *(.dynsym) }
.dynstr ${RELOCATING-0} : { *(.dynstr) }
.gnu.version ${RELOCATING-0} : { *(.gnu.version) }
.gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
.gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
.rela.text ${RELOCATING-0} :
{ *(.rela.text) *(.rela.gnu.linkonce.t*) }
.rela.data ${RELOCATING-0} :
{ *(.rela.data) *(.rela.gnu.linkonce.d*) }
.rela.rodata ${RELOCATING-0} :
{ *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
.rela.got ${RELOCATING-0} : { *(.rela.got) }
.rela.got1 ${RELOCATING-0} : { *(.rela.got1) }
.rela.got2 ${RELOCATING-0} : { *(.rela.got2) }
.rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
.rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
.rela.init ${RELOCATING-0} : { *(.rela.init) }
.rela.fini ${RELOCATING-0} : { *(.rela.fini) }
.rela.bss ${RELOCATING-0} : { *(.rela.bss) }
.rela.plt ${RELOCATING-0} : { *(.rela.plt) }
.rela.sdata ${RELOCATING-0} : { *(.rela.sdata) }
.rela.sbss ${RELOCATING-0} : { *(.rela.sbss) }
.rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2) }
.rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2) }
.text ${RELOCATING-0} :
{
${RELOCATING+${TEXT_START_SYMBOLS}}
*(.text)
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.gnu.linkonce.t*)
} =${NOP-0}
.init ${RELOCATING-0} : { *(.init) } =${NOP-0}
.fini ${RELOCATING-0} : { *(.fini) } =${NOP-0}
.rodata ${RELOCATING-0} : { *(.rodata) *(.gnu.linkonce.r*) }
.rodata1 ${RELOCATING-0} : { *(.rodata1) }
${RELOCATING+_etext = .;}
${RELOCATING+PROVIDE (etext = .);}
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${RELOCATING+${OTHER_READONLY_SECTIONS}}
/* Adjust the address for the data segment. We want to adjust up to
the same address within the page on the next page up. It would
be more correct to do this:
${RELOCATING+. = ${DATA_ADDR-ALIGN(${MAXPAGESIZE}) + (ALIGN(8) & (${MAXPAGESIZE} - 1))};}
The current expression does not correctly handle the case of a
text segment ending precisely at the end of a page; it causes the
data segment to skip a page. The above expression does not have
this problem, but it will currently (2/95) cause BFD to allocate
a single segment, combining both text and data, for this case.
This will prevent the text segment from being shared among
multiple executions of the program; I think that is more
important than losing a page of the virtual address space (note
that no actual memory is lost; the page which is skipped can not
be referenced). */
${RELOCATING+. = ${DATA_ADDR- ALIGN(8) + ${MAXPAGESIZE}};}
.data ${RELOCATING-0} :
{
${RELOCATING+${DATA_START_SYMBOLS}}
*(.data)
*(.gnu.linkonce.d*)
${CONSTRUCTING+CONSTRUCTORS}
}
.data1 ${RELOCATING-0} : { *(.data1) }
${RELOCATING+${OTHER_READWRITE_SECTIONS}}
.got1 ${RELOCATING-0} : { *(.got1) }
.dynamic ${RELOCATING-0} : { *(.dynamic) }
/* Put .ctors and .dtors next to the .got2 section, so that the pointers
get relocated with -mrelocatable. Also put in the .fixup pointers.
The current compiler no longer needs this, but keep it around for 2.7.2 */
${RELOCATING+PROVIDE (_GOT2_START_ = .);}
.got2 ${RELOCATING-0} : { *(.got2) }
${RELOCATING+PROVIDE (__CTOR_LIST__ = .);}
.ctors ${RELOCATING-0} : { *(.ctors) }
${RELOCATING+PROVIDE (__CTOR_END__ = .);}
${RELOCATING+PROVIDE (__DTOR_LIST__ = .);}
.dtors ${RELOCATING-0} : { *(.dtors) }
${RELOCATING+PROVIDE (__DTOR_END__ = .);}
${RELOCATING+PROVIDE (_FIXUP_START_ = .);}
.fixup ${RELOCATING-0} : { *(.fixup) }
${RELOCATING+PROVIDE (_FIXUP_END_ = .);}
${RELOCATING+PROVIDE (_GOT2_END_ = .);}
${RELOCATING+PROVIDE (_GOT_START_ = .);}
.got ${RELOCATING-0} : { *(.got) }
.got.plt ${RELOCATING-0} : { *(.got.plt) }
${CREATE_SHLIB+${SDATA2}}
${CREATE_SHLIB+${SBSS2}}
${RELOCATING+PROVIDE (_GOT_END_ = .);}
/* We want the small data sections together, so single-instruction offsets
can access them all, and initialized data all before uninitialized, so
we can shorten the on-disk segment size. */
.sdata ${RELOCATING-0} : { *(.sdata) }
${RELOCATING+_edata = .;}
${RELOCATING+PROVIDE (edata = .);}
.sbss ${RELOCATING-0} :
{
${RELOCATING+PROVIDE (__sbss_start = .);}
*(.sbss)
*(.scommon)
${RELOCATING+PROVIDE (__sbss_end = .);}
}
${PLT}
.bss ${RELOCATING-0} :
{
${RELOCATING+${OTHER_BSS_SYMBOLS}}
${RELOCATING+PROVIDE (__bss_start = .);}
*(.dynbss)
*(.bss)
*(COMMON)
}
${RELOCATING+_end = . ;}
${RELOCATING+PROVIDE (end = .);}
/* These are needed for ELF backends which have not yet been
converted to the new style linker. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* These must appear regardless of ${RELOCATING}. */
${OTHER_SECTIONS}
}
EOF
|
